core: Move the collections traits to libcollections

This commit moves Mutable, Map, MutableMap, Set, and MutableSet from
`core::collections` to the `collections` crate at the top-level. Additionally,
this removes the `deque` module and moves the `Deque` trait to only being
available at the top-level of the collections crate.

All functionality continues to be reexported through `std::collections`.

[breaking-change]

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libstd/path/posix.rs b/src/libstd/path/posix.rs
index 8dfb64194e7..171535edbeb 100644
--- a/src/libstd/path/posix.rs
+++ b/src/libstd/path/posix.rs
@@ -13,7 +13,7 @@
 use c_str::{CString, ToCStr};
 use clone::Clone;
 use cmp::{PartialEq, Eq};
-use container::Container;
+use collections::Collection;
 use from_str::FromStr;
 use hash;
 use io::Writer;